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Subtract 5/27 from 30/21

1st number: 1 9/21, 2nd number: 5/27

30/21 - 5/27 is 235/189.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 27 is 189
  2. For the 1st fraction, since 21 × 9 = 189,
    30/21 = 30 × 9/21 × 9 = 270/189
  3. Likewise, for the 2nd fraction, since 27 × 7 = 189,
    5/27 = 5 × 7/27 × 7 = 35/189
  4. Subtract the two fractions:
    270/189 - 35/189 = 270 - 35/189 = 235/189
  5. In mixed form: 146/189

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